All MSHA-reportable accidents at NR Hamm Quarry LLC operations in 2022. Fatalities appear first.
Overheated material fell onto the clinker conveyor belts and caused the skirt rubbers to catch on fire. The resulting fire heat caused electrical damage to the e-stop causing the belts to stop. Employees tried extinguishing the fire with fire extinguishers. The employees called the fire department. No employees were injured, property damage will exceed $10,000.
Employee was stemming holes and when employee took a scoop of rock employee hit something hard in the stemming pile and hurt shoulder. I dug through the stemming pile and found a large rock.
Employee was installing new drive belts on a conveyor sheave. As employee was rolling the new belt on the sheave their right thumb was caught between sheave edge and belt causing a laceration to thumb.